2a倍根号3ab²-b/6根号27a³+3ab倍根号a/3 (b大于0)
2a倍根号3ab²-b/6根号27a³+3ab倍根号a/3 (b大于0)
【(根号a-根号b)^2+(2a/根号a)+(b倍根号b)】/【(a倍根号a)+(b倍根号b)】+(3倍根号ab-3b)
2a根号3ab²-9分之b倍根号27a3次方+3ab根号3分之a
根号a^3*b-根号a*b^3-a^2*根号b/a+根号ab(a大于0,b大于等于0)
a+b大于等于2倍根号下ab
1.已知a>0,b>0,求证:a+b+ab分之根号下ab大于等于2倍根号2
2倍根号x2y,根号2分之ab,根号5分之3xy,根号5分之2y²,根号5(a²-b²)
若a+b=2倍的根号下ab,(a>0,b>0),求根号下(3a+5b)分之根号下a+b的值
计算:(a-2倍的根号ab+b)/(根号a-根号b)+b-a/根号a-根号b
已知:a=4倍根号ab-4b,求(3a+b-根号ab)除以(2a-b+根号ab)
根号a+根号b=根号3+根号2,根号ab=根号6+根号2,则a+b=
(2a根号3ab²)-(b/6根号27a³)-(6ab根号a/3)(b≥0)